Double-layer multi-blade collimator

A multi-leaf collimator and collimator technology, applied in the direction of using diaphragm/collimator, radiotherapy, treatment, etc., can solve the problems of low work efficiency, poor axial conformity, etc., and achieve high work efficiency , work efficiency improvement, high resolution effect

Active Publication Date: 2013-02-06
SHINVA MEDICAL INSTR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, if the width of the irradiation field is 1cm, the work efficiency is very low, and it takes mo

Method used

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  • Double-layer multi-blade collimator
  • Double-layer multi-blade collimator
  • Double-layer multi-blade collimator

Examples

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Embodiment Construction

[0032] Embodiments of the present invention are further described below in conjunction with accompanying drawings:

[0033] Such as figure 1 , 2 As shown, the double-layer multi-leaf collimator includes the upper switch type multi-leaf collimator 1 and the lower layer electric multi-leaf collimator 3, the switch type multi-leaf collimator and the electric multi-leaf collimator are composed of relative It consists of two sets of blades arranged in a row. The front end face of each blade 2 of the switch type multi-leaf collimator is a straight end face, and the rear end is connected with a miniature electromagnetic drive mechanism 6, which can realize the instantaneous opening or closing of the beam. Each electric multi-leaf collimator The blades 4 of the straightener are driven by a micro-motor 7 and can be quickly positioned to any desired position, and the blades 4 can cross the main axis of the shot field. The switch-type multi-leaf collimator leaves 2 and the electric mu...

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Abstract

The invention belongs to the field of medical equipment, is used for the intensity modulated radiation therapy of tumors and particularly relates to a double-layer multi-blade collimator. The double-layer multi-blade collimator comprises a switching multi-blade collimator on the upper layer and an electric multi-blade collimator on the lower layer; both the switching multi-blade collimator and the electric multi-blade collimator consist of two groups of opposite blades; the front end face of each blade of the switching multi-blade collimator is a straight end face and the rear end of the blade of the switching multi-blade collimator is connected with a micro electromagnetic driving mechanism; each blade of the electric multi-blade collimator is driven by a micro motor; and the blades of the switching multi-blade collimator and the blades of the electric multi-blade collimator move, are laid out in the same direction and have the same numbers. The double-layer multi-blade collimator is applied to a tumor intensity modulated radiation therapy device and has the advantages of simple structure, beam collimation, high working efficiency, high frequency modulation resolution and high safety.

Description

technical field [0001] The invention relates to a double-layer multi-leaf collimator, which belongs to the field of medical equipment and is used for conformal intensity-modulated radiation therapy of tumors. Background technique [0002] At present, the beam collimation devices for conformal intensity-modulated radiotherapy include: conventional electric multi-leaf collimator, pneumatic switch type multi-leaf collimator, and orthogonal double-layer multi-leaf collimator. [0003] Using the conventional electric multi-leaf collimator, the multi-leaf collimator can quickly complete the conformal field shaping, which is very convenient. However, in intensity-modulated irradiation, if the multi-subfield intensity-modulated mode is used, different intensity distributions need to be discretely processed into subfields, and generally need to be divided into 70-120 subfields; if sliding window irradiation technology is used, different intensity distributions need to be segmentally ...

Claims

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Application Information

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IPC IPC(8): G21K1/04A61N5/00
Inventor 成希革李兴成
Owner SHINVA MEDICAL INSTR CO LTD
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